Free Rev Boost #'s????

dzlfarmboy

dzlfarmboy

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Jun 27, 2006
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Just wanna see some numbers of what some of you guys see that have just held a free rev while in neutral or park. And what charger you did it with.

Brett
 
Well with my new setup 10lbs@ 3000 & 18lbs @ 3500 no BS I cant believe those numbers at all. One more retorque and she's gonna hit the rollers
 
What cam you running Brett? I have heard reports over the years of guy running Helix cams getting boost free revving. I never heard over 8psi tho.
 
not that I dont believe you, but usually the big dogs can get a few lbs of boost, not double digits
 
He's running a Billet Helix.

I couldn't believe it either. My truck only makes 4-5lbs at 3k, and i have the same turbos.

You should take a video Brett.
 
c-hawk said:
He's running a Billet Helix.

I couldn't believe it either. My truck only makes 4-5lbs at 3k, and i have the same turbos.

You should take a video Brett.
Click to expand...

I'll try to get a video of it today, Im running a Helix 2 and did alot of porting on the head.
 
Haven't tried it with the SS turbo but my ksb-1 I could hit 8-10lbs at redline in park.
 
dzlfarmboy said:
I'll try to get a video of it today, Im running a Helix 2 and did alot of porting on the head.
Click to expand...

wouldn't porting increase the internal volume of the pressurized tract, making it harder to create higher boost #s?
 
PS62, 2psi 3000-ish. according to the TST box, 0-100 gauge not detailed enough :)

my stock turbo I could get 6-8 up to 3500.
 
0 at 5600-5800 rpm.

i know of a guy that was tryin to get his twins to whissle free reving, ended up with a blown engine:bang oops.

ted
 
Ok i am going to ask a dumn question what difference does it make if you make boost just reving the engine in neutral???
 
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